Nakano Note (Nakano wa Kangaeru noda) NK 4447 A/2006 BF208
The following improved orbital elements, by S. Nakano, are from 134 observations 1992 to 2021. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.41 arc second. The object has passed 2.58 AU from Saturn on 1996 June 14 and 1.57 AU from Jupiter on 2009 Sept. 20 UT and also will pass 2.44 AU from Saturn on 2025 July 16 UT. Epoch = 2021 Apr. 16.0 TT T = 2021 Apr. 24.06537 +/- 0.00031 (m.e.) TT Peri. = 52.66500 +/- 0.00007 Node = 156.06162 +/- 0.00001 (2000.0) Inc. = 35.62798 +/- 0.00001 q = 3.0460823 +/- 0.0000013 AU e = 0.4835690 +/- 0.0000002 a = 5.8983340 +/- 0.0000034 AU n' = 0.06880342 +/- 0.00000006 P = 14.325 +/- 0.0000125 years T = 1992 Apr. 20.64947 TT Epoch = 1992 Apr. 8.0 TT Peri. = 53.29430 e = 0.4866872 Node = 156.47134 (2000.0) a = 5.9823009 AU Inc. = 35.50615 n'= 0.06735994 q = 3.0707915 AU P = 14.632 years T = 2006 Dec. 8.94430 TT Epoch = 2006 Dec. 11.0 TT Peri. = 53.40235 e = 0.4870497 Node = 156.32235 (2000.0) a = 6.0011954 AU Inc. = 35.34871 n'= 0.06704207 q = 3.0783148 AU P = 14.701 years The predicted orbit for the 2035 return is as follows: T = 2035 Aug. 2.08373 TT Epoch = 2035 Aug. 21.0 TT Peri. = 52.68320 e = 0.4846509 Node = 155.71723 (2000.0) a = 5.8845439 AU Inc. = 35.54004 n'= 0.06904542 q = 3.0325943 AU P = 14.275 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 1992/ 070216 G96 0.1+ 0.1+ 210222 I41 0.0 0.0 920409 261 (1.4- 3.0+) 070421 473 0.8+ 0.4- 210224 I41 0.0 0.2+ 920409 261 0.3+ 0.5+ 2020/ 210224 703 1.9- 0.5- 920427 261 (0.6- 2.3+) 200128 G96 0.1+ 0.1+ 210224 703 1.3- 0.6- 920427 261 0.3- 1.8+ 200128 G96 0.1+ 0.0 210224 703 0.2- 0.1- 2006/ 200128 G96 0.1+ 0.0 210224 I41 0.1+ 0.1+ 060131 703 0.4- 0.6- 200128 G96 0.2- 0.1+ 210304 T08 0.2- 0.5- 060131 703 0.3+ 0.1+ 200129 F51 0.0 0.0 210304 T08 0.6+ 0.1- 060131 703 0.7- 0.1+ 200129 F51 0.1+ 0.1- 210304 T08 0.3+ 0.9- 060131 703 0.5- 0.3- 200129 F51 0.1+ 0.1- 210304 T08 0.6- 0.0 060202 G96 0.0 0.3- 200129 F51 0.0 0.0 210307 703 1.4- 0.7- 060202 G96 0.2+ 0.2+ 200217 G96 0.2+ 0.1+ 210307 703 1.5- 0.6- 060202 G96 0.2+ 0.1- 200217 G96 0.1+ 0.1+ 210307 703 1.1- 0.2+ 060202 G96 0.2- 0.0 200217 G96 0.1+ 0.3- 210307 703 0.0 0.2+ 060220 703 0.4- 0.9- 200217 G96 0.2+ 0.1- 210310 703 0.2- 0.2- 060220 703 0.1- 0.0 200227 G96 0.1+ 0.1- 210310 703 1.0- 0.3+ 060220 703 0.4- 0.5- 200227 G96 0.1- 0.0 210310 703 0.6+ 0.2- 060220 703 0.4+ 0.3- 200227 G96 0.2- 0.1- 210310 703 0.1- 0.1- 060221 699 0.4- 0.8- 200227 G96 0.0 0.2- 210318 T05 (2.1- 0.6-) 060221 699 1.4- 1.9+ 200322 F52 0.1+ 0.0 210318 T05 0.0 0.6- 060221 699 0.3+ 0.1+ 200322 F52 0.2- 0.0 210318 T05 1.4+ 0.2+ 060221 699 0.4- 0.6+ 200322 F52 0.0 0.0 210318 T05 0.6- 0.6+ 060225 691 0.1- 0.4+ 200322 F52 0.1- 0.0 210319 I41 0.2+ 0.0 060225 691 0.3- 1.5+ 200423 G96 0.0 0.1+ 210319 I41 0.0 0.0 060225 691 0.0 0.2+ 200423 G96 0.1- 0.1+ 210319 I41 0.1+ 0.0 060305 704 1.2+ 0.2+ 200423 G96 0.6- 0.5- 210319 I41 0.1+ 0.1+ 060305 704 0.1- 0.9- 200423 G96 0.3- 0.2- 210319 I41 0.4+ 0.1- 060305 704 0.2+ 0.1+ 2021/ 210321 I41 0.4- 1.0- 060309 G96 0.6+ 0.2+ 210113 F52 0.0 0.1- 210321 I41 0.0 0.7- 060309 G96 0.2+ 0.2- 210113 F52 0.0 0.0 210322 703 0.1- 0.2- 060309 G96 0.3- 0.2+ 210113 F52 0.1+ 0.2+ 210322 703 0.3- 0.6- 060309 G96 0.1- 0.0 210115 F51 0.0 0.1+ 210322 703 0.9+ 0.9- 060323 G96 0.0 0.3+ 210115 F51 0.1+ 0.0 210322 703 0.5- 0.5- 060323 G96 0.3- 0.3+ 210115 F51 0.0 0.3+ 210324 F52 0.2+ 0.0 060323 G96 0.1+ 0.0 210115 F51 0.0 0.0 210324 F52 0.3+ 0.0 060323 G96 0.3- 0.0 210205 703 0.0 1.9- 210324 F52 0.0 0.0 060526 693 0.4+ 0.2- 210205 703 0.3- 0.7+ 210324 F52 0.1+ 0.1- 060526 693 0.4+ 0.0 210205 703 0.1- 1.1+ 210409 G37 0.0 0.1- 060526 693 0.7+ 0.2+ 210205 703 1.0- 1.0+ 210409 G37 0.1+ 0.1- 060526 693 0.7+ 0.2+ 210217 703 0.5- 0.1- 210409 G37 0.0 0.1- 061127 204 0.1- 0.7+ 210217 703 0.0 0.2- 210410 G37 0.1+ 0.1- 061127 204 0.1+ 0.6+ 210217 703 0.2- 0.1- 210410 G37 0.1+ 0.0 2007/ 210217 703 0.3+ 0.6+ 210410 G37 0.1+ 0.1- 070128 204 0.0 0.0 210218 703 (4.1+ 2.0-) 210411 G37 0.0 0.0 070128 204 0.3- 0.0 210218 703 0.0 0.3- 210411 G37 0.1+ 0.1- 070216 G96 0.0 0.3- 210221 703 1.3- 1.4+ 210412 G37 0.0 0.1+ 070216 G96 0.0 0.4- 210221 703 0.9- 0.3+ 210412 G37 0.8+ 1.4- 070216 G96 0.5- 0.3- 210222 I41 0.2+ 0.0 ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2021 May 6